app.py

import streamlit as st
import google.generativeai as genai

# Replace with your actual API key
API_KEY = "AIzaSyA3AAdrEZ4YwczJZpV8uVMIM7zTJpXtNgg" 

model = genai.GenerativeModel("gemini-1.5-flash")
chat = model.start_chat(
    history=[
        {"role": "user", "parts": "Hello"},
        {"role": "model", "parts": "Great to meet you. What would you like to know?"},
    ]
)

genai.configure(api_key=API_KEY)


def get_response_from_gemini(prompt):
    """Send a prompt to the Gemini model and get the response."""
    response = chat.send_message(prompt, stream=True)

    # Gemini model sends multiple parts of the response  
    response_parts = []
    for chunk in response:
        response_parts.append(chunk.text)
    
    return " ".join(response_parts)

# Streamlit UI 
st.title("Gemini Chat App")
st.write("Type your message below to chat with the Gemini model.")

user_input = st.text_area("Your Message", placeholder="Type your message here...")

if st.button("Send"):
    if user_input.strip():
        with st.spinner("Waiting for response..."):
            response = get_response_from_gemini(user_input)
        st.markdown(f"**You:** {user_input}")
        st.markdown(f"**Gemini:** {response}")
    else:
        st.warning("Please type a message before sending.")